mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-10-16 15:43:25 +00:00
939 lines
25 KiB
Go
939 lines
25 KiB
Go
package compiler_test
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import (
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"bytes"
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"fmt"
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"math/big"
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"strings"
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"testing"
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"github.com/nspcc-dev/neo-go/pkg/compiler"
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"github.com/nspcc-dev/neo-go/pkg/vm"
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"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
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"github.com/stretchr/testify/require"
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)
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func TestUnusedGlobal(t *testing.T) {
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t.Run("simple unused", func(t *testing.T) {
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src := `package foo
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const (
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_ int = iota
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a
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)
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func Main() int {
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return 1
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}`
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prog := eval(t, src, big.NewInt(1))
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require.Equal(t, 2, len(prog)) // PUSH1 + RET
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})
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t.Run("unused with function call inside", func(t *testing.T) {
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t.Run("specification names count matches values count", func(t *testing.T) {
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src := `package foo
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var control int
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var _ = f()
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func Main() int {
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return control
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}
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func f() int {
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control = 1
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return 5
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}`
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eval(t, src, big.NewInt(1))
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})
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t.Run("specification names count differs from values count", func(t *testing.T) {
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src := `package foo
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var control int
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var _, _ = f()
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func Main() int {
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return control
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}
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func f() (int, int) {
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control = 1
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return 5, 6
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}`
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eval(t, src, big.NewInt(1))
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})
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t.Run("used", func(t *testing.T) {
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src := `package foo
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var _, A = f()
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func Main() int {
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return A
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}
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func f() (int, int) {
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return 5, 6
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}`
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eval(t, src, big.NewInt(6))
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checkInstrCount(t, src, 1, 1, 0, 0) // sslot for A, single call to f
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})
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})
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t.Run("unused without function call", func(t *testing.T) {
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src := `package foo
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var _ = 1
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var (
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_ = 2 + 3
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_, _ = 3 + 4, 5
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)
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func Main() int {
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return 1
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}`
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prog := eval(t, src, big.NewInt(1))
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require.Equal(t, 2, len(prog)) // PUSH1 + RET
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})
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}
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func TestUnusedOptimizedGlobalVar(t *testing.T) {
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t.Run("unused, no initialization", func(t *testing.T) {
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src := `package foo
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var A int
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var (
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B int
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C, D, E int
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)
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func Main() int {
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return 1
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}`
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prog := eval(t, src, big.NewInt(1))
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require.Equal(t, 2, len(prog)) // Main
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})
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t.Run("used, no initialization", func(t *testing.T) {
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src := `package foo
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var A int
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func Main() int {
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return A
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}`
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eval(t, src, big.NewInt(0))
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checkInstrCount(t, src, 1, 0, 0, 0) // sslot for A
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})
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t.Run("used by unused var, no initialization", func(t *testing.T) {
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src := `package foo
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var Unused int
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var Unused2 = Unused + 1
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func Main() int {
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return 1
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}`
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prog := eval(t, src, big.NewInt(1))
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require.Equal(t, 2, len(prog)) // Main
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})
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t.Run("unused, with initialization", func(t *testing.T) {
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src := `package foo
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var Unused = 1
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func Main() int {
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return 2
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}`
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prog := eval(t, src, big.NewInt(2))
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require.Equal(t, 2, len(prog)) // Main
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})
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t.Run("unused, with initialization by used var", func(t *testing.T) {
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src := `package foo
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var (
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A = 1
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B, Unused, C = f(), A + 2, 3 // the code for Unused initialization won't be emitted as it's a pure expression without function calls
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Unused2 = 4
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)
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var Unused3 = 5
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func Main() int {
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return A + C
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}
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func f() int {
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return 4
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}`
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eval(t, src, big.NewInt(4), []interface{}{opcode.INITSSLOT, []byte{2}}, // sslot for A and C
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opcode.PUSH1, opcode.STSFLD0, // store A
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[]interface{}{opcode.CALL, []byte{10}}, opcode.DROP, // evaluate B and drop
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opcode.PUSH3, opcode.STSFLD1, opcode.RET, // store C
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opcode.LDSFLD0, opcode.LDSFLD1, opcode.ADD, opcode.RET, // Main
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opcode.PUSH4, opcode.RET) // f
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})
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t.Run("used by unused var, with initialization", func(t *testing.T) {
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src := `package foo
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var (
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Unused1 = 1
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Unused2 = Unused1 + 1
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)
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func Main() int {
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return 1
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}`
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prog := eval(t, src, big.NewInt(1))
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require.Equal(t, 2, len(prog)) // Main
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})
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t.Run("used with combination of nested unused", func(t *testing.T) {
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src := `package foo
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var (
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A = 1
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Unused1 = 2
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Unused2 = Unused1 + 1
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)
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func Main() int {
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return A
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}`
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eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{1}}, // sslot for A
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opcode.PUSH1, opcode.STSFLD0, opcode.RET, // store A
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opcode.LDSFLD0, opcode.RET) // Main
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})
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t.Run("single var stmt with both used and unused vars", func(t *testing.T) {
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src := `package foo
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var A, Unused1, B, Unused2 = 1, 2, 3, 4
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func Main() int {
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return A + B
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}`
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eval(t, src, big.NewInt(4), []interface{}{opcode.INITSSLOT, []byte{2}}, // sslot for A and B
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opcode.PUSH1, opcode.STSFLD0, // store A
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opcode.PUSH3, opcode.STSFLD1, opcode.RET, // store B
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opcode.LDSFLD0, opcode.LDSFLD1, opcode.ADD, opcode.RET) // Main
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})
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t.Run("single var decl token with multiple var specifications", func(t *testing.T) {
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src := `package foo
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var (
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A, Unused1, B, Unused2 = 1, 2, 3, 4
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C, Unused3 int
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)
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func Main() int {
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return A + B + C
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}`
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eval(t, src, big.NewInt(4), []interface{}{opcode.INITSSLOT, []byte{3}}, // sslot for A, B, C
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opcode.PUSH1, opcode.STSFLD0, // store A
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opcode.PUSH3, opcode.STSFLD1, // store B
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opcode.PUSH0, opcode.STSFLD2, opcode.RET, // store C
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opcode.LDSFLD0, opcode.LDSFLD1, opcode.ADD, opcode.LDSFLD2, opcode.ADD, opcode.RET) // Main
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})
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t.Run("function as unused var value", func(t *testing.T) {
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src := `package foo
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var A, Unused1 = 1, f()
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func Main() int {
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return A
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}
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func f() int {
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return 2
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}`
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eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{1}}, // sslot for A
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opcode.PUSH1, opcode.STSFLD0, // store A
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[]interface{}{opcode.CALL, []byte{6}}, opcode.DROP, opcode.RET, // evaluate Unused1 (call to f) and drop its value
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opcode.LDSFLD0, opcode.RET, // Main
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opcode.PUSH2, opcode.RET) // f
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})
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t.Run("function as unused struct field", func(t *testing.T) {
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src := `package foo
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type Str struct { Int int }
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var _ = Str{Int: f()}
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func Main() int {
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return 1
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}
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func f() int {
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return 2
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}`
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eval(t, src, big.NewInt(1), []interface{}{opcode.CALL, []byte{8}}, opcode.PUSH1, opcode.PACKSTRUCT, opcode.DROP, opcode.RET, // evaluate struct val
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opcode.PUSH1, opcode.RET, // Main
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opcode.PUSH2, opcode.RET) // f
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})
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t.Run("used in unused function", func(t *testing.T) {
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src := `package foo
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var Unused1, Unused2, Unused3 = 1, 2, 3
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func Main() int {
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return 1
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}
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func unused1() int {
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return Unused1
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}
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func unused2() int {
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return Unused1 + unused1()
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}
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func unused3() int {
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return Unused2 + unused2()
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}`
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prog := eval(t, src, big.NewInt(1))
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require.Equal(t, 2, len(prog)) // Main
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})
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t.Run("used in used function", func(t *testing.T) {
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src := `package foo
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var A = 1
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func Main() int {
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return f()
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}
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func f() int {
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return A
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}`
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eval(t, src, big.NewInt(1))
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checkInstrCount(t, src, 1, 1, 0, 0)
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})
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t.Run("unused, initialized via init", func(t *testing.T) {
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src := `package foo
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var A int
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func Main() int {
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return 2
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}
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func init() {
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A = 1 // Although A is unused from exported functions, it's used from init(), so it should be mark as "used" and stored.
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}`
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eval(t, src, big.NewInt(2))
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checkInstrCount(t, src, 1, 0, 0, 0)
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})
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t.Run("used, initialized via init", func(t *testing.T) {
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src := `package foo
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var A int
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func Main() int {
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return A
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}
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func init() {
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A = 1
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}`
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eval(t, src, big.NewInt(1))
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checkInstrCount(t, src, 1, 0, 0, 0)
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})
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t.Run("unused, initialized by function call", func(t *testing.T) {
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t.Run("unnamed", func(t *testing.T) {
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src := `package foo
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var _ = f()
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func Main() int {
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return 1
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}
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func f() int {
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return 2
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}`
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eval(t, src, big.NewInt(1))
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checkInstrCount(t, src, 0, 1, 0, 0)
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})
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t.Run("named", func(t *testing.T) {
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src := `package foo
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var A = f()
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func Main() int {
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return 1
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}
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func f() int {
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return 2
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}`
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eval(t, src, big.NewInt(1))
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checkInstrCount(t, src, 0, 1, 0, 0)
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})
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t.Run("named, with dependency on unused var", func(t *testing.T) {
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src := `package foo
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var (
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A = 1
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B = A + 1 // To check nested ident values.
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C = 3
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D = B + f() + C // To check that both idents (before and after the call to f) will be marked as "used".
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E = C + 1 // Unused, no code expected.
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)
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func Main() int {
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return 1
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}
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func f() int {
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return 2
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}`
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eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{3}}, // sslot for A
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opcode.PUSH1, opcode.STSFLD0, // store A
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opcode.LDSFLD0, opcode.PUSH1, opcode.ADD, opcode.STSFLD1, // store B
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opcode.PUSH3, opcode.STSFLD2, // store C
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opcode.LDSFLD1, []interface{}{opcode.CALL, []byte{9}}, opcode.ADD, opcode.LDSFLD2, opcode.ADD, opcode.DROP, opcode.RET, // evaluate D and drop
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opcode.PUSH1, opcode.RET, // Main
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opcode.PUSH2, opcode.RET) // f
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})
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t.Run("named, with dependency on unused var ident inside function call", func(t *testing.T) {
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src := `package foo
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var A = 1
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var B = f(A)
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func Main() int {
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return 1
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}
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func f(a int) int {
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return a
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}`
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eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{1}}, // sslot for A
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opcode.PUSH1, opcode.STSFLD0, // store A
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opcode.LDSFLD0, []interface{}{opcode.CALL, []byte{6}}, opcode.DROP, opcode.RET, // evaluate B and drop
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opcode.PUSH1, opcode.RET, // Main
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[]interface{}{opcode.INITSLOT, []byte{0, 1}}, opcode.LDARG0, opcode.RET) // f
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})
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t.Run("named, inside multi-specs and multi-vals var declaration", func(t *testing.T) {
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src := `package foo
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var (
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Unused = 1
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Unused1, A, Unused2 = 2, 3 + f(), 4
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)
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func Main() int {
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return 1
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}
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func f() int {
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return 5
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}`
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eval(t, src, big.NewInt(1), opcode.PUSH3, []interface{}{opcode.CALL, []byte{7}}, opcode.ADD, opcode.DROP, opcode.RET, // evaluate and drop A
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opcode.PUSH1, opcode.RET, // Main
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opcode.PUSH5, opcode.RET) // f
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})
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t.Run("unnamed + unused", func(t *testing.T) {
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src := `package foo
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var A = 1 // At least one global variable is used, thus, the whole set of package variables will be walked.
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var B = 2
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var _ = B + 1 // This variable is unnamed and doesn't contain call, thus its children won't be marked as "used".
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func Main() int {
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return A
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}`
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eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{1}}, // sslot for A
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opcode.PUSH1, opcode.STSFLD0, opcode.RET, // store A
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opcode.LDSFLD0, opcode.RET) // Main
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})
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t.Run("mixed value", func(t *testing.T) {
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src := `package foo
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var control int // At least one global variable is used, thus the whole set of package variables will be walked.
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var B = 2
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var _ = 1 + f() + B // This variable is unnamed but contains call, thus its children will be marked as "used".
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func Main() int {
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return control
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}
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func f() int {
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control = 1
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return 3
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}`
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eval(t, src, big.NewInt(1))
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checkInstrCount(t, src, 2 /* control + B */, 1, 0, 0)
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})
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t.Run("multiple function return values", func(t *testing.T) {
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src := `package foo
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var A, B = f()
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func Main() int {
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return A
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}
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func f() (int, int) {
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return 3, 4
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}`
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eval(t, src, big.NewInt(3), []interface{}{opcode.INITSSLOT, []byte{1}}, // sslot for A
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[]interface{}{opcode.CALL, []byte{7}}, opcode.STSFLD0, opcode.DROP, opcode.RET, // evaluate and store A, drop B
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opcode.LDSFLD0, opcode.RET, // Main
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opcode.PUSH4, opcode.PUSH3, opcode.RET) // f
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})
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t.Run("constant in declaration", func(t *testing.T) {
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src := `package foo
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const A = 5
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var Unused = 1 + A
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func Main() int {
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return 1
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}`
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prog := eval(t, src, big.NewInt(1))
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require.Equal(t, 2, len(prog)) // Main
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})
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t.Run("mixed expression", func(t *testing.T) {
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src := `package foo
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type CustomInt struct {
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Int int
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}
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var A = CustomInt{Int: 2}
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var B = f(3) + A.f(1)
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func Main() int {
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return 1
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}
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func f(a int) int {
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return a
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}
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func (i CustomInt) f(a int) int { // has the same name as f
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return i.Int + a
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}`
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eval(t, src, big.NewInt(1))
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checkInstrCount(t, src, 1 /* A */, 2, 2, 0)
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})
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})
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t.Run("mixed nested expressions", func(t *testing.T) {
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src := `package foo
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type CustomInt struct { Int int} // has the same field name as Int variable, important for test
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var A = CustomInt{Int: 2}
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var B = f(A.Int)
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var Unused = 4
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var Int = 5 // unused and MUST NOT be treated as "used"
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var C = CustomInt{Int: Unused}.Int + f(1) // uses Unused => Unused should be marked as "used"
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func Main() int {
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return 1
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}
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func f(a int) int {
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return a
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}
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func (i CustomInt) f(a int) int { // has the same name as f
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return i.Int + a
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}`
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eval(t, src, big.NewInt(1))
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})
|
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t.Run("composite literal", func(t *testing.T) {
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src := `package foo
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var A = 2
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var B = []int{1, A, 3}[1]
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var C = f(1) + B
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func Main() int {
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return 1
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}
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func f(a int) int {
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return a
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}`
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eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{2}}, // sslot for A, B
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opcode.PUSH2, opcode.STSFLD0, // store A
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opcode.PUSH3, opcode.LDSFLD0, opcode.PUSH1, opcode.PUSH3, opcode.PACK, opcode.PUSH1, opcode.PICKITEM, opcode.STSFLD1, // evaluate B
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opcode.PUSH1, []interface{}{opcode.CALL, []byte{8}}, opcode.LDSFLD1, opcode.ADD, opcode.DROP, opcode.RET, // evalute C and drop
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opcode.PUSH1, opcode.RET, // Main
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[]interface{}{opcode.INITSLOT, []byte{0, 1}}, opcode.LDARG0, opcode.RET) // f
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})
|
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t.Run("index expression", func(t *testing.T) {
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src := `package foo
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var Unused = 2
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var A = f(1) + []int{1, 2, 3}[Unused] // index expression
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func Main() int {
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return 1
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}
|
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func f(a int) int {
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|
return a
|
|
}`
|
|
eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{1}}, // sslot for Unused
|
|
opcode.PUSH2, opcode.STSFLD0, // store Unused
|
|
opcode.PUSH1, []interface{}{opcode.CALL, []byte{14}}, // call f(1)
|
|
opcode.PUSH3, opcode.PUSH2, opcode.PUSH1, opcode.PUSH3, opcode.PACK, opcode.LDSFLD0, opcode.PICKITEM, // eval index expression
|
|
opcode.ADD, opcode.DROP, opcode.RET, // eval and drop A
|
|
opcode.PUSH1, opcode.RET, // Main
|
|
[]interface{}{opcode.INITSLOT, []byte{0, 1}}, opcode.LDARG0, opcode.RET) // f(a)
|
|
})
|
|
t.Run("used via nested function calls", func(t *testing.T) {
|
|
src := `package foo
|
|
var A = 1
|
|
func Main() int {
|
|
return f()
|
|
}
|
|
func f() int {
|
|
return g()
|
|
}
|
|
func g() int {
|
|
return A
|
|
}`
|
|
eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{1}}, // sslot for A
|
|
opcode.PUSH1, opcode.STSFLD0, opcode.RET, // store A
|
|
[]interface{}{opcode.CALL, []byte{3}}, opcode.RET, // Main
|
|
[]interface{}{opcode.CALL, []byte{3}}, opcode.RET, // f
|
|
opcode.LDSFLD0, opcode.RET) // g
|
|
})
|
|
t.Run("struct field name matches global var name", func(t *testing.T) {
|
|
src := `package foo
|
|
type CustomStr struct { Int int }
|
|
var str = CustomStr{Int: 2}
|
|
var Int = 5 // Unused and the code must not be emitted.
|
|
func Main() int {
|
|
return str.Int
|
|
}`
|
|
eval(t, src, big.NewInt(2), []interface{}{opcode.INITSSLOT, []byte{1}}, // sslot for str
|
|
opcode.PUSH2, opcode.PUSH1, opcode.PACKSTRUCT, opcode.STSFLD0, opcode.RET, // store str
|
|
opcode.LDSFLD0, opcode.PUSH0, opcode.PICKITEM, opcode.RET) // Main
|
|
})
|
|
t.Run("var as a struct field initializer", func(t *testing.T) {
|
|
src := `package foo
|
|
type CustomStr struct { Int int }
|
|
var A = 5
|
|
var Int = 6 // Unused
|
|
func Main() int {
|
|
return CustomStr{Int: A}.Int
|
|
}`
|
|
eval(t, src, big.NewInt(5))
|
|
})
|
|
t.Run("argument of globally called function", func(t *testing.T) {
|
|
src := `package foo
|
|
var Unused = 5
|
|
var control int
|
|
var _, A = f(Unused)
|
|
func Main() int {
|
|
return control
|
|
}
|
|
func f(int) (int, int) {
|
|
control = 5
|
|
return 1, 2
|
|
}`
|
|
eval(t, src, big.NewInt(5))
|
|
})
|
|
t.Run("argument of locally called function", func(t *testing.T) {
|
|
src := `package foo
|
|
var Unused = 5
|
|
func Main() int {
|
|
var _, a = f(Unused)
|
|
return a
|
|
}
|
|
func f(i int) (int, int) {
|
|
return i, i
|
|
}`
|
|
eval(t, src, big.NewInt(5))
|
|
})
|
|
t.Run("used in globally called defer", func(t *testing.T) {
|
|
src := `package foo
|
|
var control1, control2 int
|
|
var Unused = 5
|
|
var _ = f()
|
|
func Main() int {
|
|
return control1 + control2
|
|
}
|
|
func f() int {
|
|
control1 = 1
|
|
defer func(){
|
|
control2 = Unused
|
|
}()
|
|
return 2
|
|
}`
|
|
eval(t, src, big.NewInt(6))
|
|
})
|
|
t.Run("used in locally called defer", func(t *testing.T) {
|
|
src := `package foo
|
|
var control1, control2 int
|
|
var Unused = 5
|
|
func Main() int {
|
|
_ = f()
|
|
return control1 + control2
|
|
}
|
|
func f() int {
|
|
control1 = 1
|
|
defer func(){
|
|
control2 = Unused
|
|
}()
|
|
return 2
|
|
}`
|
|
eval(t, src, big.NewInt(6))
|
|
})
|
|
t.Run("imported", func(t *testing.T) {
|
|
t.Run("init by func call", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/globalvar"
|
|
func Main() int {
|
|
return globalvar.Default
|
|
}`
|
|
eval(t, src, big.NewInt(0))
|
|
checkInstrCount(t, src, 1 /* Default */, 1 /* f */, 0, 0)
|
|
})
|
|
t.Run("nested var call", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/globalvar/nested1"
|
|
func Main() int {
|
|
return nested1.C
|
|
}`
|
|
eval(t, src, big.NewInt(81))
|
|
checkInstrCount(t, src, 6 /* dependant vars of nested1.C */, 3, 1, 1)
|
|
})
|
|
t.Run("nested func call", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/globalvar/funccall"
|
|
func Main() int {
|
|
return funccall.F()
|
|
}`
|
|
eval(t, src, big.NewInt(56))
|
|
checkInstrCount(t, src, 2 /* nested2.Argument + nested1.Argument */, -1, -1, -1)
|
|
})
|
|
t.Run("nested method call", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/globalvar/funccall"
|
|
func Main() int {
|
|
return funccall.GetAge()
|
|
}`
|
|
eval(t, src, big.NewInt(24))
|
|
checkInstrCount(t, src, 3, /* nested3.Anna + nested2.Argument + nested3.Argument */
|
|
5, /* funccall.GetAge() + Anna.GetAge() + nested1.f + nested1.f + nested2.f */
|
|
2 /* nested1.f + nested2.f */, 0)
|
|
})
|
|
})
|
|
}
|
|
|
|
func TestChangeGlobal(t *testing.T) {
|
|
t.Run("from Main", func(t *testing.T) {
|
|
src := `package foo
|
|
var a int
|
|
func Main() int {
|
|
setLocal()
|
|
set42()
|
|
setLocal()
|
|
return a
|
|
}
|
|
func set42() { a = 42 }
|
|
func setLocal() { a := 10; _ = a }`
|
|
eval(t, src, big.NewInt(42))
|
|
})
|
|
t.Run("from other global", func(t *testing.T) {
|
|
t.Skip("see https://github.com/nspcc-dev/neo-go/issues/2661")
|
|
src := `package foo
|
|
var A = f()
|
|
var B int
|
|
func Main() int {
|
|
return B
|
|
}
|
|
func f() int {
|
|
B = 3
|
|
return B
|
|
}`
|
|
eval(t, src, big.NewInt(3))
|
|
})
|
|
}
|
|
|
|
func TestMultiDeclaration(t *testing.T) {
|
|
src := `package foo
|
|
var a, b, c int
|
|
func Main() int {
|
|
a = 1
|
|
b = 2
|
|
c = 3
|
|
return a + b + c
|
|
}`
|
|
eval(t, src, big.NewInt(6))
|
|
}
|
|
|
|
func TestCountLocal(t *testing.T) {
|
|
src := `package foo
|
|
func Main() int {
|
|
a, b, c, d := f()
|
|
return a + b + c + d
|
|
}
|
|
func f() (int, int, int, int) {
|
|
return 1, 2, 3, 4
|
|
}`
|
|
eval(t, src, big.NewInt(10))
|
|
}
|
|
|
|
func TestMultiDeclarationLocal(t *testing.T) {
|
|
src := `package foo
|
|
func Main() int {
|
|
var a, b, c int
|
|
a = 1
|
|
b = 2
|
|
c = 3
|
|
return a + b + c
|
|
}`
|
|
eval(t, src, big.NewInt(6))
|
|
}
|
|
|
|
func TestMultiDeclarationLocalCompound(t *testing.T) {
|
|
src := `package foo
|
|
func Main() int {
|
|
var a, b, c []int
|
|
a = append(a, 1)
|
|
b = append(b, 2)
|
|
c = append(c, 3)
|
|
return a[0] + b[0] + c[0]
|
|
}`
|
|
eval(t, src, big.NewInt(6))
|
|
}
|
|
|
|
func TestShadow(t *testing.T) {
|
|
srcTmpl := `package foo
|
|
func Main() int {
|
|
x := 1
|
|
y := 10
|
|
%s
|
|
x += 1 // increase old local
|
|
x := 30 // introduce new local
|
|
y += x // make sure is means something
|
|
}
|
|
return x+y
|
|
}`
|
|
|
|
runCase := func(b string) func(t *testing.T) {
|
|
return func(t *testing.T) {
|
|
src := fmt.Sprintf(srcTmpl, b)
|
|
eval(t, src, big.NewInt(42))
|
|
}
|
|
}
|
|
|
|
t.Run("If", runCase("if true {"))
|
|
t.Run("For", runCase("for i := 0; i < 1; i++ {"))
|
|
t.Run("Range", runCase("for range []int{1} {"))
|
|
t.Run("Switch", runCase("switch true {\ncase false: x += 2\ncase true:"))
|
|
t.Run("Block", runCase("{"))
|
|
}
|
|
|
|
func TestArgumentLocal(t *testing.T) {
|
|
srcTmpl := `package foo
|
|
func some(a int) int {
|
|
if a > 42 {
|
|
a := 24
|
|
_ = a
|
|
}
|
|
return a
|
|
}
|
|
func Main() int {
|
|
return some(%d)
|
|
}`
|
|
t.Run("Override", func(t *testing.T) {
|
|
src := fmt.Sprintf(srcTmpl, 50)
|
|
eval(t, src, big.NewInt(50))
|
|
})
|
|
t.Run("NoOverride", func(t *testing.T) {
|
|
src := fmt.Sprintf(srcTmpl, 40)
|
|
eval(t, src, big.NewInt(40))
|
|
})
|
|
}
|
|
|
|
func TestContractWithNoMain(t *testing.T) {
|
|
src := `package foo
|
|
var someGlobal int = 1
|
|
func Add3(a int) int {
|
|
someLocal := 2
|
|
return someGlobal + someLocal + a
|
|
}`
|
|
b, di, err := compiler.CompileWithOptions("foo.go", strings.NewReader(src), nil)
|
|
require.NoError(t, err)
|
|
v := vm.New()
|
|
invokeMethod(t, "Add3", b.Script, v, di)
|
|
v.Estack().PushVal(39)
|
|
require.NoError(t, v.Run())
|
|
require.Equal(t, 1, v.Estack().Len())
|
|
require.Equal(t, big.NewInt(42), v.PopResult())
|
|
}
|
|
|
|
func TestMultipleFiles(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/multi"
|
|
func Main() int {
|
|
return multi.Sum()
|
|
}`
|
|
eval(t, src, big.NewInt(42))
|
|
}
|
|
|
|
func TestExportedVariable(t *testing.T) {
|
|
t.Run("Use", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/multi"
|
|
func Main() int {
|
|
return multi.SomeVar12
|
|
}`
|
|
eval(t, src, big.NewInt(12))
|
|
})
|
|
t.Run("ChangeAndUse", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/multi"
|
|
func Main() int {
|
|
multi.SomeVar12 = 10
|
|
return multi.Sum()
|
|
}`
|
|
eval(t, src, big.NewInt(40))
|
|
})
|
|
t.Run("PackageAlias", func(t *testing.T) {
|
|
src := `package foo
|
|
import kek "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/multi"
|
|
func Main() int {
|
|
kek.SomeVar12 = 10
|
|
return kek.Sum()
|
|
}`
|
|
eval(t, src, big.NewInt(40))
|
|
})
|
|
t.Run("DifferentName", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/strange"
|
|
func Main() int {
|
|
normal.NormalVar = 42
|
|
return normal.NormalVar
|
|
}`
|
|
eval(t, src, big.NewInt(42))
|
|
})
|
|
t.Run("MultipleEqualNames", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/multi"
|
|
var SomeVar12 = 1
|
|
func Main() int {
|
|
SomeVar30 := 3
|
|
sum := SomeVar12 + multi.SomeVar30
|
|
sum += SomeVar30
|
|
sum += multi.SomeVar12
|
|
return sum
|
|
}`
|
|
eval(t, src, big.NewInt(46))
|
|
})
|
|
}
|
|
|
|
func TestExportedConst(t *testing.T) {
|
|
t.Run("with vars", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/multi"
|
|
func Main() int {
|
|
return multi.SomeConst
|
|
}`
|
|
eval(t, src, big.NewInt(42))
|
|
})
|
|
t.Run("const only", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/constonly"
|
|
func Main() int {
|
|
return constonly.Answer
|
|
}`
|
|
eval(t, src, big.NewInt(42))
|
|
})
|
|
}
|
|
|
|
func TestMultipleFuncSameName(t *testing.T) {
|
|
t.Run("Simple", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/multi"
|
|
func Main() int {
|
|
return multi.Sum() + Sum()
|
|
}
|
|
func Sum() int {
|
|
return 11
|
|
}`
|
|
eval(t, src, big.NewInt(53))
|
|
})
|
|
t.Run("WithMethod", func(t *testing.T) {
|
|
src := `package foo
|
|
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/foo"
|
|
type Foo struct{}
|
|
func (f Foo) Bar() int { return 11 }
|
|
func Bar() int { return 22 }
|
|
func Main() int {
|
|
var a Foo
|
|
var b foo.Foo
|
|
return a.Bar() + // 11
|
|
foo.Bar() + // 1
|
|
b.Bar() + // 8
|
|
Bar() // 22
|
|
}`
|
|
eval(t, src, big.NewInt(42))
|
|
})
|
|
}
|
|
|
|
func TestConstDontUseSlots(t *testing.T) {
|
|
const count = 256
|
|
buf := bytes.NewBufferString("package foo\n")
|
|
for i := 0; i < count; i++ {
|
|
buf.WriteString(fmt.Sprintf("const n%d = 1\n", i))
|
|
}
|
|
buf.WriteString("func Main() int { sum := 0\n")
|
|
for i := 0; i < count; i++ {
|
|
buf.WriteString(fmt.Sprintf("sum += n%d\n", i))
|
|
}
|
|
buf.WriteString("return sum }")
|
|
|
|
src := buf.String()
|
|
eval(t, src, big.NewInt(count))
|
|
}
|
|
|
|
func TestUnderscoreVarsDontUseSlots(t *testing.T) {
|
|
const count = 128
|
|
buf := bytes.NewBufferString("package foo\n")
|
|
for i := 0; i < count; i++ {
|
|
buf.WriteString(fmt.Sprintf("var _, n%d = 1, 1\n", i))
|
|
}
|
|
buf.WriteString("func Main() int { sum := 0\n")
|
|
for i := 0; i < count; i++ {
|
|
buf.WriteString(fmt.Sprintf("sum += n%d\n", i))
|
|
}
|
|
buf.WriteString("return sum }")
|
|
|
|
src := buf.String()
|
|
eval(t, src, big.NewInt(count))
|
|
}
|
|
|
|
func TestUnderscoreGlobalVarDontEmitCode(t *testing.T) {
|
|
src := `package foo
|
|
var _ int
|
|
var _ = 1
|
|
var (
|
|
A = 2
|
|
_ = A + 3
|
|
_, B, _ = 4, 5, 6
|
|
_, C, _ = f(A, B)
|
|
)
|
|
var D = 7 // named unused, after global codegen optimisation no code expected
|
|
func Main() int {
|
|
return 1
|
|
}
|
|
func f(a, b int) (int, int, int) {
|
|
return 8, 9, 10
|
|
}`
|
|
eval(t, src, big.NewInt(1), []interface{}{opcode.INITSSLOT, []byte{2}}, // sslot for A, B
|
|
opcode.PUSH2, opcode.STSFLD0, // store A
|
|
opcode.PUSH5, opcode.STSFLD1, // store B
|
|
opcode.LDSFLD0, opcode.LDSFLD1, opcode.SWAP, []interface{}{opcode.CALL, []byte{8}}, // evaluate f(A,B)
|
|
opcode.DROP, opcode.DROP, opcode.DROP, opcode.RET, // drop result of f(A,B)
|
|
opcode.PUSH1, opcode.RET, // Main
|
|
[]interface{}{opcode.INITSLOT, []byte{0, 2}}, opcode.PUSH10, opcode.PUSH9, opcode.PUSH8, opcode.RET) // f
|
|
}
|